Steam-trap.



UNITED STATES Patented october 27, 1903.

PATENT OFFICE.

EDWARD GERHARD, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE NATIONAL DRY KILN COMPANY, OF INDIANAPOLIS, INDIANA, A COR- PORATION OF INDIANA.

STEAM SPECIFICATION forming part of Letters Patent N o. 742,308, dated October 27, y1903.

Application filed April 2l, 1903.

To all whom it may concern/ Be it known that I, EDWARD GEERARD, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have in vented certain new and useful Improvements in Steam-Traps, of which the following is a specification.

The object of my invention is to produce an efticient but easily-constructed valve especially designed for steam-traps, by means of which the discharge-outlet maybe automatically varied by the accumulating condensed water.

The accompanying drawings illustrate my invention. Y

Figure 1 is a central vertical sectional view of the steam-trap with the valve shown in elevation, and Fig. 2 is an enlarged vertical section of the valves.

In the drawings, indicates a suitable box or casing provided with the usual steam-inlet 11, drainage-outlet 12, water-outlet 13, and cap 14. Casing 10 is lalso provided with a pair of openings 15, at which points a suitable gage-glass may be attached. Outlet 13 does not communicate directly with the interior of the casing 10, but communicates therewith through a channel 16, formed in cap 14 and communicating with an opening 17, into which is secured one end of a tube 18, which extends downward to a point near the bottom of casing 10. The upper end of tube 18 isV closed bya plug 19, having a central vertical bore 20, with a valve-seat 21 formed at the lower end thereof. Adapted to seat in valve-V seat 21 is the conical head 22 of a hollow cone-valve 23, provided with a bore 24, somewhat less in diameter than the bore 20. The cone-valve 23 is adapted to vibrate vertically within tube 18 and is held in alinement with valve-seat' 21 between wings 18', formed in the tube 18. Nested within the cone-valve 23 is a second conevalve,25, provided with a conical head 26, which seats within a valveseat 24', formed at the lower end of bore 24. Cone-"valve 25 is hollow and is provided with a vertical bore 26,whicl1 is smaller than bore 24, but alines therewith, and which has a valveseat 26 formed at the lower end. Adapted Serial No. 153,673. (No model.)

to seat within valve-seat26 is a pin-valve 27, provided with a conical head 27', which seats within the valve-seatn26. carried at the upper end of a rod 28, which at its lower end is pivoted to the short arm of a lever 29, pivoted at 30 to tube 18 and carrying at the end of its long arm a iioat-ball 3l. Pin-valve 27 carries a pair of crossarms, which project through slots 32 in the cone-valve 25 and aline with slots 33 in conevalve 23, the slots 32, however, being of less length than the slots 33 and of greater length than the diameter of pin27.

' In operation the weight or ball 3l normally holds pin-valve 27 into seat 26', cone 26 into Vseat 24', and cone 22 into seat 21. As the water'accumulates in easing 10 and inally rises above the lower end of tube 18, so as to seal the same, ball 3l rises and draws pinvalve 27 downward, so as to open bore 26, and the water is forced by the steam-pressure within casing 10 upward through tube 18 and 'so as to open bore 24, and if this is not sufficient to allow the water to escape as rapidly as it accumulates ball 31 will continue to rise until pins 27" come into contact with the lower ends of slot 33, so as to pull valve 23 downward, thus opening bore 20, whereupon the maximum discharge will take place. As the Pin-valve 27. is`

`is discharged through bore 26, bore 24, and l lbore 2O into passage 16 and from thence out water -decreases within the casing 10 the ball 31 will drop, and the valves 2,3 and 25 will be returnedin the order named by the pressurev of water passing therethrough.

It will be noted that by reason of the nesting of the several valves a single operating I claim as my inventionn 1. In a, steam-trap, the combination, with the main receiving-casing, of t cylinder having an Opening in its top and extending downward into said casing, a Valve mounted in the casing and normally closing` the opening in the upper end thereof, said valve consisting of a pluralit3T of nested valve members, and means for automatically moving said valve members in succession, for the purpose set forth.

2. In avalve structure of the clessdescrbed, the combination, with the mein receiving-cas ing and a cylinder having an opening in its top and extending downward into said casing, of a plurality of hollow cone-valves nested EDWARD GERHARD.

Vitnesses:

ARTHUR M. HOOD, JAMES A. WALSH. 

